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Contract OI history

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Oct 30, 2026 EXPIRATION

CIFR $18.50 Put

CIFR261030P00018500

Latest saved OI12Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CIFR $18.50 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 3671830 2026-10-09: 295 OI2026-10-13: 367 OI2026-10-14: 367 OI2026-10-15: 241 OI2026-10-16: 13 OI2026-10-21: 12 OI2026-10-23: 12 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

CIFR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing120
Oct 21, 202612-1
Oct 16, 202613-228
Oct 15, 2026241-126
Oct 14, 20263670
Oct 13, 2026367+72
Oct 09, 2026295No prior observation